High-Energy Alpha Particles from B12

C. W. Cook, W. A. Fowler, C. C. Lauritsen, and T. Lauritsen
Phys. Rev. 111, 567 – Published 15 July 1958
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Abstract

An earlier investigation of the alpha-particle spectrum associated with the beta decay of B12 has been extended to an alpha-particle energy of approximately 3 Mev. The high-energy spectrum appears to indicate a broad level in C12 having an excitation energy of 10.1±0.2 Mev and a width at half-maximum of Γ2.5 Mev. The most probable spin and parity assignment for this level is J=0+, although J=2+ cannot be definitely excluded; for J=0+ the width is approximately the Wigner limit. It is found that (0.13±0.04)% of all decays of B12 lead to this state.

  • Received 24 March 1958

DOI:https://doi.org/10.1103/PhysRev.111.567

©1958 American Physical Society

Authors & Affiliations

C. W. Cook*, W. A. Fowler, C. C. Lauritsen, and T. Lauritsen

  • Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California

  • *Now at Convair, San Diego, California.

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Issue

Vol. 111, Iss. 2 — July 1958

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